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require 'abstract_unit'
require 'active_support/core_ext/module/delegation'
module Notifications
class TestCase < ActiveSupport::TestCase
def setup
@old_notifier = ActiveSupport::Notifications.notifier
@notifier = ActiveSupport::Notifications::Fanout.new
ActiveSupport::Notifications.notifier = @notifier
@events = []
@named_events = []
@subscription = @notifier.subscribe { |*args| @events << event(*args) }
@named_subscription = @notifier.subscribe("named.subscription") { |*args| @named_events << event(*args) }
end
def teardown
ActiveSupport::Notifications.notifier = @old_notifier
end
private
def event(*args)
ActiveSupport::Notifications::Event.new(*args)
end
end
class SubscribedTest < TestCase
def test_subscribed
name = "foo"
name2 = name * 2
expected = [name, name]
events = []
callback = lambda {|*_| events << _.first}
ActiveSupport::Notifications.subscribed(callback, name) do
ActiveSupport::Notifications.instrument(name)
ActiveSupport::Notifications.instrument(name2)
ActiveSupport::Notifications.instrument(name)
end
assert_equal expected, events
ActiveSupport::Notifications.instrument(name)
assert_equal expected, events
end
end
class UnsubscribeTest < TestCase
def test_unsubscribing_removes_a_subscription
@notifier.publish :foo
@notifier.wait
assert_equal [[:foo]], @events
@notifier.unsubscribe(@subscription)
@notifier.publish :foo
@notifier.wait
assert_equal [[:foo]], @events
end
def test_unsubscribing_by_name_removes_a_subscription
@notifier.publish "named.subscription", :foo
@notifier.wait
assert_equal [["named.subscription", :foo]], @named_events
@notifier.unsubscribe("named.subscription")
@notifier.publish "named.subscription", :foo
@notifier.wait
assert_equal [["named.subscription", :foo]], @named_events
end
def test_unsubscribing_by_name_leaves_the_other_subscriptions
@notifier.publish "named.subscription", :foo
@notifier.wait
assert_equal [["named.subscription", :foo]], @events
@notifier.unsubscribe("named.subscription")
@notifier.publish "named.subscription", :foo
@notifier.wait
assert_equal [["named.subscription", :foo], ["named.subscription", :foo]], @events
end
private
def event(*args)
args
end
end
class SyncPubSubTest < TestCase
def test_events_are_published_to_a_listener
@notifier.publish :foo
@notifier.wait
assert_equal [[:foo]], @events
end
def test_publishing_multiple_times_works
@notifier.publish :foo
@notifier.publish :foo
@notifier.wait
assert_equal [[:foo], [:foo]], @events
end
def test_publishing_after_a_new_subscribe_works
@notifier.publish :foo
@notifier.publish :foo
@notifier.subscribe("not_existant") do |*args|
@events << ActiveSupport::Notifications::Event.new(*args)
end
@notifier.publish :foo
@notifier.publish :foo
@notifier.wait
assert_equal [[:foo]] * 4, @events
end
def test_log_subscriber_with_string
events = []
@notifier.subscribe('1') { |*args| events << args }
@notifier.publish '1'
@notifier.publish '1.a'
@notifier.publish 'a.1'
@notifier.wait
assert_equal [['1']], events
end
def test_log_subscriber_with_pattern
events = []
@notifier.subscribe(/\d/) { |*args| events << args }
@notifier.publish '1'
@notifier.publish 'a.1'
@notifier.publish '1.a'
@notifier.wait
assert_equal [['1'], ['a.1'], ['1.a']], events
end
def test_multiple_log_subscribers
@another = []
@notifier.subscribe { |*args| @another << args }
@notifier.publish :foo
@notifier.wait
assert_equal [[:foo]], @events
assert_equal [[:foo]], @another
end
private
def event(*args)
args
end
end
class InstrumentationTest < TestCase
delegate :instrument, :to => ActiveSupport::Notifications
def test_instrument_returns_block_result
assert_equal 2, instrument(:awesome) { 1 + 1 }
end
def test_instrument_yields_the_paylod_for_further_modification
assert_equal 2, instrument(:awesome) { |p| p[:result] = 1 + 1 }
assert_equal 1, @events.size
assert_equal :awesome, @events.first.name
assert_equal Hash[:result => 2], @events.first.payload
end
def test_instrumenter_exposes_its_id
assert_equal 20, ActiveSupport::Notifications.instrumenter.id.size
end
def test_nested_events_can_be_instrumented
instrument(:awesome, :payload => "notifications") do
instrument(:wot, :payload => "child") do
1 + 1
end
assert_equal 1, @events.size
assert_equal :wot, @events.first.name
assert_equal Hash[:payload => "child"], @events.first.payload
end
assert_equal 2, @events.size
assert_equal :awesome, @events.last.name
assert_equal Hash[:payload => "notifications"], @events.last.payload
end
def test_instrument_publishes_when_exception_is_raised
begin
instrument(:awesome, :payload => "notifications") do
raise "FAIL"
end
rescue RuntimeError => e
assert_equal "FAIL", e.message
end
assert_equal 1, @events.size
assert_equal Hash[:payload => "notifications",
:exception => ["RuntimeError", "FAIL"]], @events.last.payload
end
def test_event_is_pushed_even_without_block
instrument(:awesome, :payload => "notifications")
assert_equal 1, @events.size
assert_equal :awesome, @events.last.name
assert_equal Hash[:payload => "notifications"], @events.last.payload
end
end
class EventTest < TestCase
def test_events_are_initialized_with_details
time = Time.now
event = event(:foo, time, time + 0.01, random_id, {})
assert_equal :foo, event.name
assert_equal time, event.time
assert_in_delta 10.0, event.duration, 0.00001
end
def test_events_consumes_information_given_as_payload
event = event(:foo, Time.now, Time.now + 1, random_id, :payload => :bar)
assert_equal Hash[:payload => :bar], event.payload
end
def test_event_is_parent_based_on_children
time = Time.utc(2009, 01, 01, 0, 0, 1)
parent = event(:foo, Time.utc(2009), Time.utc(2009) + 100, random_id, {})
child = event(:foo, time, time + 10, random_id, {})
not_child = event(:foo, time, time + 100, random_id, {})
parent.children << child
assert parent.parent_of?(child)
assert !child.parent_of?(parent)
assert !parent.parent_of?(not_child)
assert !not_child.parent_of?(parent)
end
protected
def random_id
@random_id ||= SecureRandom.hex(10)
end
end
end
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